Now showing items 1-10 of 1

    Archean - unnamed strata (1)
    Cambrian - Eolus granite; Twilight granite; Ignacio quartzite (1)
    Carboniferous - Cutler formation; Rico formation; Hermosa formation; Molas formation; Ouray limestone (1)
    Cretaceous - Mancos shale; Dakota sandstone (1)
    Devonian - Ouray limestone; Elbert formation (1)
    Geology -- Colorado -- Dolores County -- Maps (1)
    Geology -- Colorado -- La Plata County -- Maps (1)
    Geology -- Colorado -- Montezuma County -- Maps (1)
    Geology -- Colorado -- San Juan County -- Maps (1)
    Geology -- United States --Maps (1)